2.2 b: Application
YASKAWA ELECTRIC
TOEP C710687 03B FSDrive-MV1000 Parameter Guide
103
n
b1-03: Stopping Method Selection
Selects how the drive stops the motor when the Run command is removed or when a Stop command is entered.
Setting 0: Ramp to stop
When the Run command is removed, the drive will decelerate the motor to stop. The deceleration rate is determined by
the active deceleration time. The default deceleration time is set to parameter C1-02.
When the output frequency falls below the level set in parameter b2-01, the drive will start DC injection braking or Zero
Speed Control.
Refer to b2: DC Injection Braking on page 108
for details.
Setting 1: Coast to stop
When the Run command is removed, the drive will shut off its output and the motor will coast (uncontrolled
deceleration) to stop. The stopping time is determined by the inertia and the friction in the driven system.
Figure 2.1
Figure 2.1 Coast to Stop.
Note:
After a stop is initiated, any subsequent Run command entered will be ignored until the minimum baseblock time (L2-03) has
expired. Do not enter a Run command until it has come to a complete stop. Use DC Injection at Start (
Injection Braking Time at Start on page 109
Refer to b3: Speed Search on page 110
) to restart the motor
before it has completely stopped.
Setting 2: DC Injection Braking to stop
When the Run command is removed, the drive will enter baseblock (turn off its output) for the minimum baseblock time
(L2-03). Once the minimum baseblock time has expired, the drive will brake the motor by injecting DC current into the
motor windings. The stopping time in DC Injection Braking to Stop is significantly faster compared to Coast to Stop. The
level of current used for DC Injection Braking is set by parameter b2-02 (default = 50%).
Note:
This function is not available in CLV (A1-02 = 3).
Figure 2.2
Figure 2.2 DC Injection Braking to Stop
No.
<1> Setting 2 is not available in CLV.
Name
Setting Range
Default
b1-03
Stopping Method Selection
1
Drive output is shut off
Run
command
Output
frequency
Motor speed
ON
OFF
Motor coasts
b2-02
(DC Injection Braking Current)
Run
command
Output
frequency
ON
OFF
Motor speed
Minimum Baseblock
Time (L2-03)
b2-04
(DC Injection
Braking Time
at Stop)
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